This analysis is performed using the data from XENON100's Science Run II, which collected a 225 live-day exposure between February 28, 2011 and March 31, 2012 [1]}.
For the WIMP analysis, we drop the requirement of observing an S1 signal. This allows us to lower the effective threshold at the cost of losing \(z\)  coordinate reconstruction from the S2-S1 peak time difference and particle identification based on the S2/S1 signal ratio. We perform a background-limited analysis on this previously unblinded data set.
